Flashback
A mysterious giant of light is fighting off a monster who seems to be Klaxo-Zetton. A girl, who is watching the fight, shouts at the giant for unknown reasons. It's not until the Klaxosaur beast shot out it's energy bullet, hitting the giant and cause the explosion to hit the girl. After seeing the girl got hurt, the giant was filled with rage and anger that he pulled out his holy sword and used it at it's full power. This resulted of the giant lost the holy sword and cause a massive explosion. Then, the giant returned to his human form which revealed to be Ryusuke Kurenai as he collected Ultraman's Fusion Card. Ryunai went to the girl who he identified her as Natasha. As the girl dying on the boy's lap, she hold onto the boy's hands and took out the last of her words, "Ryunai, p-please, don't give up, no matter what." As the girl died on the boy's arms, he screams in sadness.
End of the flashback
12 years later...
APE Transport Plane en route to Plantation 13
"So, why are we going again?" asks Ryunai to Dr. Franxx.
"You're going to be the Captain of Squad 13." answers Dr. Franxx.
"How's my brother?" Ryunai asks a another question. Ryunai had been thinking about Hiro due to not meeting him 5 years ago.
"He's fine. His performance has been improving even more further lately." Dr. Franxx answers again.
"Can't wait to see him again." says Ryunai.
"You miss him?" Nana asks.
"Yeah, after all those time I couldn't see him because I had so much work to do, I could finally see him now." Ryunai answers.
"We will arrive at Plantation 13 in 7 minutes." The pilot announces.
Later, they arrived and immediately went to the control room where Hachi is.
"Ah, Doctor. You're here." says Hachi.
"So, how's the children?" asks Dr. Franxx.
"I want to ask you if you could speed up their training since the startup ritual starts tomorrow." says Hachi to the doctor.
"Yeah, I suppose so." Dr. Franxx replys.
"Can I meet Hiro?" Ryunai asks.
"Sure, just before the training starts." Dr. Franxx answers.
10 minutes later...
Hiro and Zero Two went to the forest of Plantation 13.
"Hey, Darling." Zero Two to Hiro.
"Yes, Zero Two?" Hiro replys.
"I've heard that your brother is coming soon." Zero Two explains.
"Wait, he is?" asked Hiro.
"Hiro!" said Ryunai shouting in the distance.
"Ryunai?!" Hiro said with a surprise expression.
As the two brothers face each other, they ran and hugged.
"I never thought I'd see you again!" Hiro exclaimed.
"Me too! Kind of.." Ryunai replys.
"So, you must be Ryunai." said Zero Two.
"Yes, I am." Ryunai to Zero Two.
"So, what are you doing here?" Hiro questions.
"I'm gonna be your squad's captain." Ryunai answers.
"Really? That's cool!" Hiro approves.
"All members of Squad 13, please head to the training area after wearing your parasite suits." said the comms.
"Well, looks we have to go." said Ryunai.
"Yeah." Hiro replys.
"I'll be at the control room for a moment. You guys get ready, okay?" Ryunai told.
"Okay. Come on, Zero Two. Let's go." Hiro to Zero Two.
"Okay, Darling!" Zero Two replys.
All of them left the forest.
The next day...
"Well, looks like everything is done. The startup ritual should start now." said Hachi.
"We will hereby begin the startup ritual. With this, you kids will finally become official parasites." said Papa.
As the gates are about to open, something shook the ground and cause the gates to only open halfway.
"This is bad. The fog is rolling in." said Dr. Franxx.
Then, a klaxosaur appears from the sky who to be identified as Klaxo-Basser, the King Beast of the Wind. As the klaxosaur begins attacking on garage 2 where Delphinium is at, Ryunai went to somewhere to hide so that he could transform into Ultraman Orb.
"Ultraman-san!" said Ryunai as he pulls out Ultraman's Fusion Card.
"Ultraman!" said the Orb Ring as it receives Ultraman's power.
"Tiga-san!" said Ryunai as he pulls out Ultraman Tiga's Fusion Card.
"Ultraman Tiga!" said the Orb Ring as it receives Ultraman Tiga's power.
"I'm borrowing the power of your lights!" said Ryunai as he activates the Orb Ring.
"Fusion Up!" the Orb Ring announces as it combines the powers of the two ultras
with Orb to create their corresponding form.
"Ultraman Orb Specium Zeperion!" said the Orb Ring as the ultra performs a rising scene.
As the klaxosaur was about to neutralize Delphinium, the giant knocks the beast away.
"My name is Orb. I light up the darkness and strike at evil!" Orb phrases before fighting the beast.
The ultra begins charging at the beast and use a flying kick towards the chest He then kicks the side of the beast and a very high kick to the head. The klaxosaur attacks Orb with its wings. Orb blocks it and kicks the hide and a blitz kick to the chest. As the beast was about to fly off, Orb grabs its legs and uses Tiga's Power Type's strength to swing it around. After throwing it, Orb uses the Sperion Light Ring by forming a purple buzzsaw-like projectile disc to slice his opponent, performed in a similar manner to the charge up of both Ultraman's Ultra-Slash and Tiga's Zepellion Ray, and with a sound similar to that of the Ultra-Slash. When using this attack, Orb emits Ultraman's grunt. Once thrown, it travels on a straight path. He aims it at Klaxo-Basser. But the beast flies off to the sky but Orb uses Tiga's Sky Type's speed to catch the Sperion Light Ring and aims it at the beast once more. Orb flies off aftering the beast.
"So, Ultraman Orb returns again? Looks like he has a new form now. Impressive." said Dr. Franxx.
Orb manage to strike the beast back on the ground. As soon as Orb lands on the ground, the thing on the ultra's chest starts to flash red. The ultra felt weak.
"The thing on his chest is called the color timer. It flashes red whenever he is running out of time, running out of energy or incredibly injured." said Dr. Franxx.
"How long he will last?" Ikuno asks.
"3 minutes." Dr. Franxx answers.
"Get up! Ultraman Orb!" Hiro encourages the ultra to stand up.
Orb heard the encouragement of his younger brother. As Orb stands up, he uses the Sperion Ray charging it in a similar manner to Tiga's Zepellion Ray and performed in a similar manner to the original Ultraman's Specium Ray to finish off the beast. The Klaxosaur explodes afterwards.
"He did it!" said Ichigo with a cheerful expression.
As everyone was cheering, Orb flies off to the sky.
"Looks like we're about to see something new later on." said the professor.
"Hey guys, what did I miss?" said Ryunai as he approachas them.
"My, my, where were you?" the professor asks.
"Oh, well, I went to the restroom."
"There was an attack going on and you still have time to go to the restroom? You gotta be kidding." said the professor as he look away.
Nana sighed.